Abstract
Volunteer potatoes are difficult to control in onions and can greatly reduce onion growth and yield. Herbicides and cultivation were evaluated for control of simulated volunteer potatoes in onions in 1996 and 2000. Three interrow cultivations did not control potatoes in the onion row and the remaining plants reduced onion yield 50 and 73% compared with the hand-weeded checks. Three applications of oxyfluorfen (0.2 0.17 0.17 kg ai/ha) or bromoxynil plus oxyfluorfen (0.2 0.17 kg ai/ha) at the two-, three-, and four- to five-leaf stages of onions followed by a cultivation after each application reduced potato tuber weight 69 to 96% and tuber number 32 to 86% compared with cultivation alone and prevented onion yield loss associated with potatoes. Ethofumesate applied preemergence at 0.6 kg/ha followed by postemergence ethofumesate plus bromoxynil and cultivation reduced potato tuber weight 90% and tuber number 68% compared with cultivation alone, and onions yielded equal to hand-weeded checks. Two applications of fluroxypyr (0.3 kg ai/ha) plus bromoxynil (0.2 kg ai/ha) at the two- and three-leaf stages of onions followed by a cultivation after each application reduced potato tuber weight by greater than 90%, but onion yields were reduced 38 to 66%.Nomenclature: Bromoxynil; ethofumesate; fluroxypyr; oxyfluorfen; onion, Allium cepa L. ‘Fiesta’ and ‘Asgrow EX15120’; potato, Solanum tuberosum L. ‘Russet Burbank’.Additional index words: Groundkeepers (volunteer potato), tillage.Abbreviations: POST, postemergence; PRE, preemergence.
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Claims 10
Claim · model-written summary
Three interrow cultivations failed to control potato volunteers in the onion row.
- Taxon
- Onion
Allium cepat0 - Treatment
- Three interrow cultivationse0
- Interactor
- potatoes
Solanum tuberosume0weed - Outcome
- potatoes in the onion rowe0
- Direction
- did not controle0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Three interrow cultivations did not control potatoes in the onion row”
t0“Onion (Allium cepa)”
Claim · model-written summary
Remaining potatoes reduced onion yield by 50% and 73% versus hand weeded checks.
- Taxon
- onionsAllium cepae1
- Interactor
- potatoesSolanum tuberosume1weed
- Outcome
- onion yielde0
- Direction
- reducede0
- Value
- 50 and 73%e0
- Comparator
- hand-weeded checkse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the remaining plants reduced onion yield 50 and 73% compared with the hand-weeded checks”
e1“Volunteer potatoes are difficult to control in onions”
Claim · model-written summary
Oxyfluorfen or bromoxynil plus oxyfluorfen with cultivation reduced potato tuber weight 69 to 96% versus cultivation alone.
- Taxon
- OnionAllium cepat0
- Treatment
- oxyfluorfene0
- Interactor
- potatoSolanum tuberosume0weed
- Outcome
- potato tuber weighte0
- Direction
- reducede0
- Value
- 69 to 96%e0
- Comparator
- cultivation alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Three applications of oxyfluorfen (0.2 0.17 0.17 kg ai/ha) or bromoxynil plus oxyfluorfen (0.2 0.17 kg ai/ha) at the two-, three-, and four- to five-leaf stages of onions followed by a cultivation after each application reduced potato tuber weight 69 to 96% and tuber number 32 to 86% compared with cultivation alone”
t0“Onion (Allium cepa)”
Claim · model-written summary
The oxyfluorfen regimens with cultivation reduced potato tuber number 32 to 86%.
- Taxon
- OnionAllium cepat0
- Treatment
- bromoxynil plus oxyfluorfene0
- Interactor
- potatoSolanum tuberosume0weed
- Outcome
- tuber numbere0
- Direction
- reducede0
- Value
- 32 to 86%e0
- Comparator
- cultivation alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“bromoxynil plus oxyfluorfen (0.2 0.17 kg ai/ha) at the two-, three-, and four- to five-leaf stages of onions followed by a cultivation after each application reduced potato tuber weight 69 to 96% and tuber number 32 to 86% compared with cultivation alone”
t0“Onion (Allium cepa)”
Claim · model-written summary
The oxyfluorfen regimens prevented potato-associated onion yield loss.
- Taxon
- OnionAllium cepat0
- Treatment
- oxyfluorfene1
- Interactor
- potatoesSolanum tuberosume0weed
- Outcome
- onion yield loss associated with potatoese0
- Direction
- preventede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“prevented onion yield loss associated with potatoes”
e1“Three applications of oxyfluorfen (0.2 0.17 0.17 kg ai/ha) or bromoxynil plus oxyfluorfen (0.2 0.17 kg ai/ha)”
t0“Onion (Allium cepa)”
Claim · model-written summary
Ethofumesate with bromoxynil and cultivation reduced potato tuber weight 90%.
- Taxon
- OnionAllium cepat0
- Treatment
- Ethofumesate applied preemergence at 0.6 kg/hae0
- Interactor
- potatoSolanum tuberosume0weed
- Outcome
- potato tuber weighte0
- Direction
- reducede0
- Value
- 90%e0
- Comparator
- cultivation alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ethofumesate applied preemergence at 0.6 kg/ha followed by postemergence ethofumesate plus bromoxynil and cultivation reduced potato tuber weight 90% and tuber number 68% compared with cultivation alone”
t0“Onion (Allium cepa)”
Claim · model-written summary
Ethofumesate with bromoxynil and cultivation reduced potato tuber number 68%.
- Taxon
- OnionAllium cepat0
- Treatment
- Ethofumesate applied preemergence at 0.6 kg/hae0
- Interactor
- potatoSolanum tuberosume0weed
- Outcome
- tuber numbere0
- Direction
- reducede0
- Value
- 68%e0
- Comparator
- cultivation alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ethofumesate applied preemergence at 0.6 kg/ha followed by postemergence ethofumesate plus bromoxynil and cultivation reduced potato tuber weight 90% and tuber number 68% compared with cultivation alone”
t0“Onion (Allium cepa)”
Claim · model-written summary
Onion yield under ethofumesate equaled hand weeded checks.
- Taxon
- onionsAllium cepae1
- Treatment
- Ethofumesate applied preemergence at 0.6 kg/hae0
- Outcome
- onions yieldede1
- Direction
- equale1
- Comparator
- hand-weeded checkse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ethofumesate applied preemergence at 0.6 kg/ha followed by postemergence ethofumesate plus bromoxynil and cultivation”
e1“onions yielded equal to hand-weeded checks”
Claim · model-written summary
Fluroxypyr plus bromoxynil and cultivation reduced potato tuber weight by over 90%.
- Taxon
- OnionAllium cepat0
- Treatment
- fluroxypyr (0.3 kg ai/ha) plus bromoxynil (0.2 kg ai/ha)e0
- Interactor
- potatoSolanum tuberosume0weed
- Outcome
- potato tuber weighte0
- Direction
- reducede0
- Value
- greater than 90%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Two applications of fluroxypyr (0.3 kg ai/ha) plus bromoxynil (0.2 kg ai/ha) at the two- and three-leaf stages of onions followed by a cultivation after each application reduced potato tuber weight by greater than 90%”
t0“Onion (Allium cepa)”
Claim · model-written summary
Fluroxypyr plus bromoxynil reduced onion yields by 38 to 66%.
- Taxon
- onionAllium cepae1
- Treatment
- fluroxypyr (0.3 kg ai/ha) plus bromoxynil (0.2 kg ai/ha)e0
- Outcome
- onion yieldse1
- Direction
- reducede1
- Value
- 38 to 66%e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Two applications of fluroxypyr (0.3 kg ai/ha) plus bromoxynil (0.2 kg ai/ha)”
e1“onion yields were reduced 38 to 66%”
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